EEVblog Electronics Community Forum
A Free & Open Forum For Electronics Enthusiasts & Professionals
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
This topic
This board
Entire forum
Google
Bing
Home
Help
Search
About us
Links
Login
Register
EEVblog Electronics Community Forum
»
Electronics
»
Projects, Designs, and Technical Stuff
»
LTSPICE VCVS limits.....?
« previous
next »
Print
Search
Pages: [
1
]
Go Down
Author
Topic: LTSPICE VCVS limits.....? (Read 5336 times)
0 Members and 1 Guest are viewing this topic.
Smokey
Super Contributor
Posts: 2903
Country:
Not An Expert
LTSPICE VCVS limits.....?
«
on:
September 29, 2015, 12:05:39 am »
I'm having a hell of a time trying to put voltage limits on a voltage controlled voltage source. According to the following link there are parameters for Min and Max for the E VCVS but I can't get LTSPICE to work with them.
http://www.ece.uci.edu/docs/hspice/hspice_2001_2-206.html
I just get an "unknown paramater" fault.
I would post an asc file, but it's not even a circuit yet, just an E VCVS. It works as expected, just not with limits.
Any ideas?
Logged
Smokey
Super Contributor
Posts: 2903
Country:
Not An Expert
Re: LTSPICE VCVS limits.....?
«
Reply #1 on:
September 29, 2015, 12:41:24 am »
I'm just going to update this real time as I find stuff. Here is the LTSPICE wiki page for VCVS. Looks like LTSpice doesn't support min and max for VCVS. Interesting they recommend using a VCCS and shunting it with a resistor to make a voltage. Going to try that now.
http://ltwiki.org/index.php?title=E_Voltage_Dependent_Voltage_Source
Logged
Smokey
Super Contributor
Posts: 2903
Country:
Not An Expert
Re: LTSPICE VCVS limits.....?
«
Reply #2 on:
September 29, 2015, 12:54:46 am »
Looks like the same deal with no limits on VCCS. I think I have a workaround now that current limits and diode clamps the output of the first VCVS, and feeds that voltage into a second VCVS as a buffer. That just seems silly.
Logged
T3sl4co1l
Super Contributor
Posts: 22413
Country:
Expert, Analog Electronics, PCB Layout, EMC
Re: LTSPICE VCVS limits.....?
«
Reply #3 on:
September 29, 2015, 01:49:49 am »
This is probably more along the lines of what you want;
http://ltwiki.org/index.php5?title=B_sources_(complete_reference)
Logged
Seven Transistor Labs, LLC
Electronic design, from concept to prototype.
Bringing a project to life? Send me a message!
Smokey
Super Contributor
Posts: 2903
Country:
Not An Expert
Re: LTSPICE VCVS limits.....?
«
Reply #4 on:
September 29, 2015, 02:26:04 am »
Damn. That is one seriously intimidating spice source. I love how it's super complex and they don't give any examples. What do they think I am, an engineer???
Logged
Print
Search
Pages: [
1
]
Go Up
« previous
next »
Share me
Smf
EEVblog Electronics Community Forum
»
Electronics
»
Projects, Designs, and Technical Stuff
»
LTSPICE VCVS limits.....?
There was an error while thanking
Thanking...
EEVblog Main Site
EEVblog on Youtube
EEVblog on Twitter
EEVblog on Facebook
EEVblog on Odysee